A biomass briquette boiler mixing and uniform feeding device

Abstract

The utility model discloses a kind of biomass briquette boiler mixing material uniform material feeding device, it is related to biomass briquette boiler mixing material uniform material feeding technical field, a kind of biomass briquette boiler mixing material uniform material feeding device, including shell, the top of the shell is fixedly connected with mixing bin, the top of mixing bin is fixedly connected with feed pipe, the inside of shell is fixedly connected with conveying square tube, the inside of shell is fixedly connected with material pipe, the inside rotationally connected with third shaft of conveying square tube, the equipment is first by beating stick to preliminarily beat various materials, secondly again by the high-speed rotation of crushing disc to the crushing of various materials after beating too large, simultaneously again by the reverse rotation of U-shaped scraper to push edge material to participate in mixing process, the distribution state of various materials in the process of mixing can be effectively balanced by the linkage cooperation of above structure.

Description

Technical Field

[0001] This utility model relates to the field of biomass briquette fuel boiler mixing and feeding technology, and in particular to a biomass briquette fuel boiler mixing and feeding device. Background Technology

[0002] Biomass briquettes are environmentally friendly new energy sources made by mechanically compressing biomass waste such as straw, rice husks, sawdust, and wood chips into solid pellets with a certain shape and high density. They have advantages such as small volume, high density, convenient storage and transportation; stable combustion and long cycle; high combustion efficiency; and low pollutant content in ash and flue gas. They provide an effective way to solve the problems of energy shortage and agricultural waste incineration.

[0003] Traditional biomass briquette fuel boiler mixing and feeding devices often have certain limitations in the mixing process. For example, since biomass briquette fuel raw materials are waste materials such as straw, rice husks, and sawdust, and the different forms and densities of these materials result in strong heterogeneity, traditional devices often use simple stirring, which cannot balance the distribution of different materials, leading to insufficient mixing uniformity. This can result in the material entering the boiler being "locally too concentrated and locally too thin." Therefore, developing a device that can effectively balance the distribution of different materials during the mixing process of biomass briquette fuel boilers to achieve a more uniform mixture is a key direction for solving the above problems. Utility Model Content

[0004] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to provide a biomass briquette fuel boiler mixing and feeding device, which can solve the problem of effectively balancing the distribution of different materials in the process of mixing biomass briquette fuel boiler to make the mixed materials more uniform.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a biomass briquette fuel boiler mixing and feeding device, comprising a shell, a mixing chamber fixedly connected to the top of the shell, a feeding pipe fixedly connected to the top of the mixing chamber, a conveying square tube fixedly connected inside the shell, a material pipe fixedly connected inside the shell, a third rotating shaft rotatably connected inside the conveying square tube, a first rotating shaft rotatably connected inside the conveying square tube, a fifth gear fixedly sleeved on the surface of the third rotating shaft, a first gear fixedly sleeved on the surface of the first rotating shaft, a second motor fixedly installed at the rear of the shell, a second spiral blade fixedly sleeved on the surface of the third rotating shaft, the same second spiral blade fixedly sleeved on the surface of the first rotating shaft, a first motor fixedly installed at the top of the mixing chamber, a fourth gear fixedly sleeved at the output end of the first motor, and a coaxial bidirectional multi-functional stirring shaft assembly provided inside the mixing chamber.

[0006] Preferably, the coaxial bidirectional multifunctional stirring shaft assembly includes a second rotating shaft, which is rotatably connected inside the mixing chamber. A third gear is fixedly sleeved on the surface of the second rotating shaft near the first motor. A hollow shaft is rotatably sleeved on the surface of the second rotating shaft. A second gear is fixedly sleeved on the end of the hollow shaft near the first motor. A dispersing roller is fixedly connected to the surface of the hollow shaft. A pulverizing disc is fixedly connected to the surface of the hollow shaft. A U-shaped scraper is fixedly connected to the surface of the second rotating shaft. A chamber wall cleaning component is fixedly connected to the surface of the U-shaped scraper. A first spiral blade is fixedly connected to the surface of the second rotating shaft away from the first motor.

[0007] Preferably, the feed pipe is connected to the interior of the mixing chamber, and the first spiral blade is located below the U-shaped scraper.

[0008] Preferably, the material pipe is connected to the inside of the conveying square pipe and the mixing bin, respectively.

[0009] Preferably, the output end of the second motor is fixedly connected to the third rotating shaft, and the first spiral blades are rotatably connected to the mixing chamber and the material pipe respectively.

[0010] Preferably, the first gear and the fifth gear are meshed and connected to the outside of the housing, and the U-shaped scraper is rotatably connected to the inside of the mixing chamber.

[0011] Preferably, the fourth gear is meshed with the second gear and the third gear and is connected to the top of the mixing chamber, the dispersing roller and the crushing disc are rotatably connected to the interior of the mixing chamber, and the crushing disc is located below the dispersing roller.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This biomass briquette fuel boiler mixing and feeding device first uses a dispersing roller to initially disperse various materials, then uses a high-speed rotating crushing disc to break up any oversized materials after dispersing, and simultaneously uses a U-shaped scraper to rotate in the opposite direction to push edge materials into the mixing process. Through the coordinated operation of the above structures, the distribution of various materials can be effectively balanced during the mixing process, thereby achieving better uniformity of the mixed materials and effectively reducing the situation of "local over-concentration and local over-diluteness" when the materials enter the boiler. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a three-dimensional structural diagram of the biomass briquette mixing and feeding equipment of this utility model; Figure 2 This is a schematic diagram of the structure of the mixing and feeding equipment of this utility model; Figure 3 This is a schematic diagram of the internal structure of the mixing chamber of this utility model; Figure 4 This is a schematic diagram of the internal structure of the material conveying square tube of this utility model; Figure 5 This is a schematic diagram of the spiral blade structure of this utility model; Figure 6 This is a schematic diagram of the replacement structure for the bin wall cleaning component of this utility model.

[0014] Reference numerals: 1. Outer shell; 2. Mixing chamber; 3. Feed pipe; 4. First motor; 5. Conveying square tube; 6. Second motor; 7. First rotating shaft; 8. First gear; 9. Second rotating shaft; 10. Second gear; 11. Third gear; 12. Hollow shaft; 13. Fourth gear; 14. Crushing disc; 15. U-shaped scraper; 16. Chamber wall cleaning component; 17. First spiral blade; 18. Third rotating shaft; 19. Fifth gear; 20. Second spiral blade; 21. Material pipe; 22. Dispersing roller. Detailed Implementation

[0015] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0016] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0018] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0019] Structural Description: Outer shell 1: Serves as the basic support structure of the device, used to fix and install components such as mixing chamber 2, conveying square tube 5, and second motor 6, while protecting the internal structure; Mixing Chamber 2: As the core space for dispersing, crushing, and mixing biomass fuel, it houses a coaxial bidirectional multi-functional mixing shaft assembly, providing a place for material pretreatment; Feed pipe 3: Connects to the interior of mixing chamber 2, serving as the input channel for biomass fuel to enter mixing chamber 2, guiding the material into the pretreatment process; First motor 4: Fixedly installed on the top of mixing chamber 2, with the output end fixedly connected to the fourth gear 13, providing power for the operation of the coaxial bidirectional multi-functional stirring shaft assembly; Material conveying square tube 5: Fixed inside the outer shell 1, serving as the channel for the final material conveying to the boiler. It houses the first rotating shaft 7, the third rotating shaft 18, and the second spiral blade 20, realizing the uniform feeding and conveying of materials. The second motor 6 is fixed behind the outer casing 1, and its output end is fixedly connected to the third rotating shaft 18. It provides power for the rotation of the third rotating shaft 18 and drives the material conveying structure inside the material conveying tube 5. First rotating shaft 7: Rotatably connected inside the conveying square tube 5, with the first gear 8 fixedly sleeved on its surface. Through the opposite rotation to the third rotating shaft 18, it cooperates with the second spiral blade 20 to achieve material uniformity and conveying. First gear 8: It is fixedly sleeved on the surface of the first rotating shaft 7 and meshes with the fifth gear 19 on the third rotating shaft 18, transmitting the power of the third rotating shaft 18 to the first rotating shaft 7, so that the two rotate in opposite directions. Second rotating shaft 9: As the core shaft of the coaxial bidirectional multi-functional stirring shaft assembly, it is rotatably connected inside the mixing chamber 2. The surface is fixedly connected to the U-shaped scraper 15 and the first spiral blade 17, and the end is fixedly sleeved with the third gear 11. It rotates in the opposite direction under power drive to achieve stirring and pushing of materials. The second gear 10 is fixedly sleeved on one end of the hollow shaft 12 near the first motor 4 and meshes with the fourth gear 13 to transmit the power of the first motor 4 to the hollow shaft 12, causing the hollow shaft 12 to rotate. The third gear 11 is fixedly sleeved on one end of the second rotating shaft 9 near the first motor 4 and meshes with the fourth gear 13. It transmits the power of the first motor 4 to the second rotating shaft 9, causing the second rotating shaft 9 to rotate. Since it is located on both sides of the fourth gear 13, the second rotating shaft 9 and the hollow shaft 12 rotate in opposite directions. Hollow shaft 12: Rotatably sleeved on the surface of the second rotating shaft 9, with the second gear 10 fixedly sleeved at one end near the first motor 4, and the surface fixedly connected to the dispersing roller 22 and the crushing disc 14. It rotates under the drive of the second gear 10, driving the dispersing and crushing components to operate. Fourth gear 13: It is fixedly sleeved on the output end of the first motor 4 and meshes with the second gear 10 and the third gear 11 respectively, transmitting the power of the first motor 4 to the hollow shaft 12 and the second rotating shaft 9, driving them to rotate in opposite directions; Crushing disc 14: It is fixedly connected to the surface of hollow shaft 12 and located below dispersing roller 22. It rotates with hollow shaft 12 to further crush and refine the material that has been initially dispersed by dispersing roller 22, thereby improving the uniformity of material particles. U-shaped scraper 15: It is fixedly connected to the surface of the second rotating shaft 9 and rotates with the second rotating shaft 9 in the mixing chamber 2. On the one hand, it stirs and mixes the crushed material, and on the other hand, it pushes the material to move to the bottom of the mixing chamber 2. Bin wall cleaning component 16: It is fixedly connected to the surface of the U-shaped scraper 15 and rotates with the U-shaped scraper 15 to scrape and clean the inner wall of the mixing bin 2 to prevent material from adhering and remaining; First spiral blade 17: fixedly connected to the end surface of the second rotating shaft 9 away from the first motor 4 and located below the U-shaped scraper 15, it rotates with the second rotating shaft 9 to push the material at the bottom of the mixing chamber 2 to the material pipe 21; The third rotating shaft 18 is rotatably connected inside the material conveying square tube 5 and is driven to rotate by the second motor 6. The fifth gear 19 and the second spiral blade 20 are fixedly sleeved on its surface to provide power for material conveying inside the material conveying square tube 5. Fifth gear 19: It is fixedly sleeved on the surface of the third rotating shaft 18 and meshes with the first gear 8, transmitting the power of the third rotating shaft 18 to the first rotating shaft 7, so that the first rotating shaft 7 and the third rotating shaft 18 rotate in opposite directions; The second spiral blade 20 is fixedly sleeved on the surface of the third rotating shaft 18 (and the same second spiral blade 20 is fixedly sleeved on the surface of the third rotating shaft 18). It rotates with the third rotating shaft 18 and, in conjunction with the corresponding structure on the first rotating shaft 7, realizes the conveying and uniform feeding of materials in the conveying square tube 5. Material pipe 21: It is connected to the inside of the conveying square pipe 5 and the mixing chamber 2 respectively, and serves as a material channel between the mixing chamber 2 and the conveying square pipe 5, so as to introduce the material pushed by the first spiral blade 17 into the conveying square pipe 5. Dispersing roller 22: Fixedly connected to the surface of hollow shaft 12, it rotates with hollow shaft 12 to initially disperse the blocky or agglomerated biomass fuel entering the mixing chamber 2 from the feed pipe 3, breaking up the agglomerates to avoid obstruction of subsequent processing.

[0020] Furthermore, when using the device, biomass fuel enters the mixing chamber 2 through the feed pipe 3, and the first motor 4 starts and drives the fourth gear 13 at the output end to rotate. Since the fourth gear 13 simultaneously meshes with the second gear 10 at the end of the hollow shaft 12 and the third gear 11 at the end of the second rotating shaft 9, and the second gear 10 and the third gear 11 are located on both sides of the fourth gear 13, the hollow shaft 12 and the second rotating shaft 9 rotate in opposite directions under the drive of the fourth gear 13. When the hollow shaft 12 rotates, the dispersing rollers 22 on its surface rotate synchronously, initially dispersing the lumpy or agglomerated biomass fuel entering the mixing chamber 2, breaking up the clumps to avoid obstruction of subsequent processing. The dispersed material falls to the crushing disc 14, and the hollow shaft 12 drives the crushing disc 14 to continue rotating, further crushing and refining the material, improving the uniformity of the material particles. At the same time, the second rotating shaft 9 rotates in the opposite direction, driving the U-shaped scraper 15 on its surface to rotate in the mixing chamber 2. The U-shaped scraper 15 stirs and mixes the crushed material on one hand, and on the other hand, it scrapes and cleans the inner wall of the mixing chamber 2 through the chamber wall cleaning parts 16 on its surface to avoid material adhesion and residue. The uniformly mixed material falls to the bottom of the mixing chamber 2 under the push of gravity and the U-shaped scraper 15. The first spiral blade 17 at the end of the second rotating shaft 9 rotates with the second rotating shaft 9, pushing the mixed material along the bottom of the mixing chamber 2 to the material pipe 21, and then into the conveying square pipe 5 through the material pipe 21. At this time, the second motor 6 at the rear of the outer casing 1 starts, driving the third rotating shaft 18 to rotate. The second spiral blades 20 on the surface of the third rotating shaft 18 rotate synchronously to transport materials. At the same time, the fifth gear 19 on the surface of the third rotating shaft 18 meshes with the first gear 8 on the surface of the first rotating shaft 7, driving the first rotating shaft 7 to rotate in the opposite direction (opposite to the direction of the third rotating shaft 18). Through the synergistic effect of the double-shaft reverse spiral conveying, the first rotating shaft 7 and the third rotating shaft 18 further homogenize the materials, ensuring that the materials are uniformly and stably transported to the boiler in the conveying square tube 5.

[0021] This biomass briquette fuel boiler mixing and feeding device first uses a dispersing roller 22 to initially disperse various materials, then uses a high-speed rotating crushing disc 14 to crush excessively large materials after dispersion, and simultaneously uses a U-shaped scraper 15 to push edge materials to participate in the mixing process through the reverse rotation of the U-shaped scraper 15. Through the linkage of the above structures, the distribution of various materials can be effectively balanced during the mixing process, thereby achieving better uniformity of the mixed materials and effectively reducing the situation of "local over-concentration and local over-dilute" when the materials enter the boiler.

[0022] Example 1; please refer to Figure 1-6This utility model provides a technical solution: a biomass briquette fuel boiler mixing and feeding device. When the bin wall cleaning component 16 is a cleaning brush, it can clean the fine residues, powdery materials and fibrous attachments on the inner wall of the mixing bin 2. When the U-shaped scraper 15 rotates in the opposite direction, the brush bristles can penetrate into the tiny gaps in the bin wall to scrape away the residues, preventing the accumulation of fine materials and the formation of clumps. At the same time, it does not damage the surface of the bin wall, ensuring the cleanliness of the mixing bin 2 and preventing residual materials from interfering with the uniformity of the new material mixing.

[0023] Example 2: When the cleaning component 16 cleans the scraper, the cleaning scraper targets the thick layer of material, sticky material and clumps of residue adhering to the inner wall of the mixing bin 2. With its rigid structure, the scraper closely adheres to the bin wall as it rotates in the opposite direction with the U-shaped scraper 15, and peels off stubborn residues through shearing force. This is suitable for biomass raw materials with high moisture content or strong viscosity, and helps to reduce the accumulation of material on the bin wall.

[0024] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A biomass pellet fuel boiler mixing and feeding device, comprising a shell (1), characterized in that, The top of the outer shell (1) is fixedly connected to a mixing chamber (2), the top of the mixing chamber (2) is fixedly connected to a feed pipe (3), the inside of the outer shell (1) is fixedly connected to a conveying square pipe (5), the inside of the outer shell (1) is fixedly connected to a material pipe (21), the inside of the conveying square pipe (5) is rotatably connected to a third rotating shaft (18), the inside of the conveying square pipe (5) is rotatably connected to a first rotating shaft (7), the surface of the third rotating shaft (18) is fixedly fitted with a fifth gear (19), the surface of the first rotating shaft (7) is fixedly fitted with a first gear (8), the rear of the outer shell (1) is fixedly installed with a second motor (6), the surface of the third rotating shaft (18) is fixedly fitted with a second spiral blade (20), the surface of the first rotating shaft (7) is fixedly fitted with the same second spiral blade (20), the top of the mixing chamber (2) is fixedly installed with a first motor (4), the output end of the first motor (4) is fixedly fitted with a fourth gear (13), and the inside of the mixing chamber (2) is provided with a coaxial bidirectional multi-functional stirring shaft assembly.

2. The biomass pellet fuel boiler mixing and feeding device according to claim 1, characterized in that: The coaxial bidirectional multifunctional stirring shaft assembly includes a second rotating shaft (9), which is rotatably connected inside the mixing chamber (2). A third gear (11) is fixedly sleeved on the surface of the second rotating shaft (9) near the first motor (4). A hollow shaft (12) is rotatably sleeved on the surface of the second rotating shaft (9). A second gear (10) is fixedly sleeved on the end of the hollow shaft (12) near the first motor (4). A dispersing rod (22) is fixedly connected to the surface of the hollow shaft (12). A pulverizing disc (14) is fixedly connected to the surface of the hollow shaft (12). A U-shaped scraper (15) is fixedly connected to the surface of the second rotating shaft (9). A chamber wall cleaning component (16) is fixedly connected to the surface of the U-shaped scraper (15). A first spiral blade (17) is fixedly connected to the surface of the second rotating shaft (9) away from the first motor (4).

3. The biomass pellet fuel boiler mixing and feeding device according to claim 1, characterized in that: The feed pipe (3) is connected to the interior of the mixing chamber (2), and the first spiral blade (17) is located below the U-shaped scraper (15).

4. The biomass pellet fuel boiler mixing and feeding device according to claim 1, characterized in that: The material pipe (21) is connected to the inside of the conveying square pipe (5) and the mixing bin (2).

5. The biomass pellet fuel boiler mixing and feeding device according to claim 1, characterized in that: The output end of the second motor (6) is fixedly connected to the third rotating shaft (18), and the first spiral blade (17) is rotatably connected to the mixing chamber (2) and the material pipe (21) respectively.

6. The biomass pellet fuel boiler mixing and feeding device according to claim 1, characterized in that: The first gear (8) and the fifth gear (19) are meshed and connected to the outside of the outer shell (1), and the U-shaped scraper (15) is rotatably connected to the inside of the mixing chamber (2).

7. The biomass pellet fuel boiler mixing and feeding device according to claim 1, characterized in that: The fourth gear (13) is meshed with the second gear (10) and the third gear (11) respectively and connected to the top of the mixing chamber (2). The dispersing roller (22) and the crushing disc (14) are rotatably connected to the inside of the mixing chamber (2). The crushing disc (14) is located below the dispersing roller (22).

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